triangulate dbpedia+doap links (only 5 :( )
with gsoc-projects-2012-dbpedia-links.nt and misc/sourceforge-doap.nt
PREFIX rdfs:    <http://www.w3.org/2000/01/rdf-schema#>

CONSTRUCT { ?a rdfs:seeAlso ?c . }

WHERE {
    ?a rdfs:seeAlso ?b .
    ?b rdfs:seeAlso ?c .
}